---
title: "POST /knowledgeBases/{knowledgeBaseId}/messageTemplates/{messageTemplateId}/activate"
method: POST
path: "/knowledgeBases/{knowledgeBaseId}/messageTemplates/{messageTemplateId}/activate"
---

# POST /knowledgeBases/{knowledgeBaseId}/messageTemplates/{messageTemplateId}/activate

`POST /knowledgeBases/{knowledgeBaseId}/messageTemplates/{messageTemplateId}/activate`

Activates a specific version of the Amazon Q in Connect message template. After the version is activated, the previous active version will be deactivated automatically. You can use the <code>$ACTIVE_VERSION</code> qualifier later to reference the version that is in active status.

## Path parameters

- `knowledgeBaseId` string, required
- `messageTemplateId` string, required

## Request body

- object
  - `versionNumber` integer, required — The version number of the message template version to activate.

## Response `200`

Success

- ActivateMessageTemplateResponse
  - `messageTemplateArn` string, required — The Amazon Resource Name (ARN) of the message template.
  - `messageTemplateId` string, required — The identifier of the message template.
  - `versionNumber` integer, required — The version number of the message template version that is activated.

## Other responses

- `480` — ConflictException
- `481` — ValidationException
- `482` — AccessDeniedException
- `483` — ResourceNotFoundException
- `484` — ThrottlingException

---

[API](https://skmtc.net/aws/apis/qconnect.md) · [All operations](https://skmtc.net/aws/apis/qconnect/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/aws/qconnect/versions/833f5de92023/schema)